JP5748538B2 - Elevator repair method and elevator - Google Patents

Description

  The present invention relates to an elevator refurbishing method in which a hydraulic elevator is a machine room-less elevator, and an elevator.

  In recent years, when renovating an aging existing hydraulic elevator, there is an increasing need for refurbishment to a machine room-less elevator without a machine room from the viewpoint of environmental impact, space saving, energy saving, and the like. Conventionally, when renovating a hydraulic elevator to a rope-type machine room-less elevator, after all the equipment of the hydraulic elevator has been removed, the equipment of the rope-type machine room-less elevator (for example, see Patent Document 1) is installed in the hoistway. It has been installed again. In such a conventional refurbishment method, it takes time and effort to remove all hydraulic elevator equipment, and a large amount of waste is generated. In addition, the period of renovation work where the elevator cannot be used will be prolonged.

  Conventionally, in order to shorten the period of repair work for elevators and reduce repair costs, the drive unit of the hydraulic elevator is removed and a hoisting machine is installed in the space created after the removal. There has been proposed a method for repairing an elevator that uses a car or the like (see, for example, Patent Document 2).

JP-A-9-165172 JP 2006-347727 A

  However, in the elevator repair method shown in Patent Document 2, not only the existing car but also the existing car hanging part attached to the car is diverted, so the car is suspended in a cantilevered state by the main rope. Will lower the balance of the car. Thereby, the load which acts on apparatuses, such as a car guide rail which guides a car, becomes large, and the lifetime of the elevator after repair will be shortened.

  The present invention has been made to solve the above-described problems, and is a method for repairing an elevator that can shorten the period of the repair work of the elevator and can extend the life of the elevator. And to obtain an elevator.

  The elevator refurbishing method according to the present invention includes a hydraulic jack, a sled car that is moved up and down by the hydraulic jack, and a driving rope that is wound around the sled car and suspends the car via a car suspension beam attached to the car. An elevator renovation method in which a hydraulic elevator, in which a car is raised and lowered by a hydraulic elevator drive section including the elevator, is raised and lowered by a driving force of a hoisting machine. Remove the drive unit to provide equipment installation space between the existing car hoistway and the hoistway wall, remove the car suspension beam from the car, remove the car suspension beam, and install the hoisting machine in the equipment installation space. After the hoist installation process and the car suspension beam removal process to be installed, the car suspension device including a pair of car suspension vehicles arranged apart from each other in the horizontal direction The car hoist is installed on the car, and the main rope is wound around each car hoisting car so as to pass under the car, and the main rope is hung on the sheave of the hoisting machine, and the car is hung by the main rope. A main rope winding process is provided.

  An elevator according to the present invention includes a car, an emergency stop device that applies a braking force to the car by gripping a pair of car guide rails that guide the car, and a pair of elevators that are arranged apart from each other in the horizontal direction. A car suspension car, a car suspension car frame that supports each car suspension car, and a bracket device attached to the frame of the emergency stop device to which the car suspension car frame is attached. A car device, a hoisting machine that generates a driving force for raising and lowering the car, a sheave of the hoisting machine, and a main rope that hangs around each car suspension car and suspends the car. A mounting base attached to the frame, and a bracket that is rotatable with respect to the mounting base and to which the car suspension frame is attached. A holding position in contact with the bottom of the car, and is displaced between the off position located below the holding position.

  In the elevator repair method according to the present invention, the drive unit for the hydraulic elevator is removed to provide a device installation space between the existing car hoistway and the hoistway wall, and the car suspension beam is removed from the car. Since the hoisting machine is installed in the equipment installation space and the car suspension device is provided in the lower part of the car, the existing car or the like can be used for the repaired elevator. In addition, since a device installation space is secured in the existing hoistway, it is not necessary to secure an additional device installation space. Therefore, it is possible to shorten the period of the elevator repair work. In addition, by winding the main rope around each car suspension car of the car suspension system, the main rope can be passed under the car, and the position of the suspension point of the car by the main rope can be brought close to the center of gravity of the car. . Thereby, the car can be stably suspended by the main rope, and the load acting on the equipment such as the car guide rail can be reduced. Thereby, the lifetime of the elevator after repair can be achieved.

  In the elevator according to the present invention, the mounting base of the car suspension device is attached to the frame of the emergency stop device, and the car suspension vehicle frame is attached to a bracket that is rotatable with respect to the mounting base. By rotating the bracket with respect to the mounting base, the bracket is displaced between a holding position in contact with the lower part of the car and a disengagement position located below the holding position. The car suspension device can be easily provided at the lower part of the car simply by attaching the mounting base of the new car suspension device to the frame of the existing emergency stop device. Thereby, the period of the repair work of an elevator can be shortened. In addition, by winding the main rope around each car suspension car of the car suspension system, the main rope can be passed under the car, and the position of the suspension point of the car by the main rope can be brought close to the center of gravity of the car. . Thereby, the load which acts on apparatuses, such as a car guide rail, can be reduced. Furthermore, since the car is suspended by the main rope wound around the car suspension car, the car suspension frame contacts the lower part of the car from below, so the load when the car is suspended by the main rope is reduced to the lower part of the car. Can be received at. As a result, the load when the car is suspended can be borne not only on the frame of the emergency stop device, but also on the lower part of the cage, thereby preventing a large load from acting on the frame of the emergency stop device. The breakage of the frame of the emergency stop device can be prevented. Thereby, lifetime improvement of an elevator can be achieved.

1 is a configuration diagram illustrating a hydraulic elevator before repair according to Embodiment 1 of the present invention. FIG. It is a top view which shows the hydraulic elevator of FIG. It is an enlarged view which shows the cage | basket | car of the hydraulic elevator of FIG. It is a block diagram which shows the machine room less elevator obtained by renovation of the hydraulic elevator of FIG. It is a top view which shows the machine room less elevator of FIG. It is a top view which shows some apparatuses of the machine room less elevator of FIG. It is a top view which compares the position of the suspension point which suspends the cage | basket of the hydraulic elevator of FIG. 2, and the position of the suspension point which suspends the cage | basket of the machine room less elevator of FIG. FIG. 7 is a side view showing the car, the safety device, and the car suspension device of FIG. 6. It is a top view which shows the car of FIG. 8, an emergency stop device, and a car suspension apparatus. FIG. 10 is a cross-sectional view taken along line XX in FIG. 9. FIG. 11A is a layout view showing a state in which each car suspension vehicle is arranged on a straight line intersecting with a straight line connecting the car guide rails, and FIG. 11A shows the positional relationship between the emergency stop device and the car suspension vehicle device. FIG. 11B is a plan view showing the positional relationship between the safety device and the car suspension device. FIG. 12A is a plan view showing a state in which each car suspension car is arranged on a straight line parallel to the straight line connecting the car guide rails, and FIG. 12A is a plan view showing the positional relationship between the emergency stop device and the car suspension car device. FIG. 12B is a front view showing the positional relationship between the safety device and the car suspension device. It is sectional drawing which shows the car suspension apparatus when the bracket of FIG. 10 rotates centering on a pin. It is a front view which shows the car suspension apparatus of FIG.

Embodiment 1 FIG.
1 is a block diagram showing a hydraulic elevator before refurbishment according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the hydraulic elevator of FIG. Further, FIG. 3 is an enlarged view showing the car of the hydraulic elevator shown in FIG. In the figure, a car 2 and a hydraulic elevator drive unit 3 including a hydraulic jack 4 are provided in a hoistway 1. The car 2 is moved up and down in the hoistway 1 by the driving force of the hydraulic elevator drive unit 3. In the hydraulic elevator according to the first embodiment, the hydraulic elevator drive unit 3 is provided in the vertical projection plane of the hoistway 1 (that is, the projection plane when the hoistway 1 is projected along the vertical direction). The back plunger type elevator is arranged at the rear (opposite the landing as viewed from the car 2).

  As shown in FIG. 1, the hydraulic jack 4 has a cylinder 4a fixed in the hoistway 1 in a state of being filled with oil, and a plunger 4b movable up and down with respect to the cylinder 4a. A hydraulic power unit (not shown) that generates hydraulic pressure in the cylinder 4a is connected to the hydraulic jack 4 via a hydraulic pipe (not shown). The hydraulic power unit is controlled by a hydraulic control panel (not shown). The plunger 4b is moved up and down with respect to the cylinder 4a by the control of the hydraulic pressure from the hydraulic power unit.

  A deflecting wheel 5 is attached to the upper part of the plunger 4b via a support frame (not shown). The deflecting wheel 5 is moved up and down by the driving force of the hydraulic jack 4. As shown in FIG. 2, a pair of baffle guide rails 6 for guiding the baffle 5 via a support frame are installed on both sides of the hydraulic jack 4.

  Guide shoes (not shown) are provided on the upper and lower parts of the car 2. On both sides of the car 2, as shown in FIGS. 2 and 3, a pair of car guide rails 8 for guiding the raising and lowering of the car 2 through guide shoes is installed.

  Under the car 2, an emergency stop device 9 is provided that applies a braking force to the car 2 by gripping each car guide rail 8. As shown in FIG. 2, the emergency stop device 9 includes a pair of gripping portions 10 that individually grip each car guide rail 8, an interlocking mechanism portion 11 that interlocks the operation of each gripping portion 10, and a lower portion of the car 2. It has an emergency stop frame 12 that is attached and supports a common frame that supports each gripping part 10 and the interlocking mechanism part 11.

  The emergency stop frame 12 is horizontally arranged with its longitudinal direction aligned with the direction in which the car guide rails 8 face each other (in this example, the width direction of the car 2). The gripping part 10 is disposed at both ends of the safety frame 12. As shown in FIG. 2, the emergency stop device 9 is disposed on a straight line A connecting the car guide rails 8 in the vertical projection plane of the hoistway 1.

  A car suspension beam 13 attached to the emergency stop frame 12 is provided at the lower part of the car 2. As shown in FIG. 2, a plurality of mounting holes (bolt holes) 14 for mounting the car suspension beam 13 are provided in the intermediate portion of the emergency stop frame 12. The car suspension beam 13 is fixed to the emergency stop frame 12 with bolts passed through the mounting holes 14.

  The car suspension beam 13 has a car suspension part 13 a that protrudes from the rear part of the car 2 to the rear of the car 2. As shown in FIGS. 2 and 3, a vibration isolator 15 that receives the car 2 is fixed on the car suspension beam 13. Thereby, the car 2 is supported by the car suspension beam 13 via the vibration isolator 15.

  One end of a plurality of driving ropes 16 for suspending the car 2 is connected to the car hanging part 13a. The other end of the driving rope 16 is fixed to the lower part of the hoistway 1. The driving rope 16 reaches from the one end connected to the car suspension 13 a to the other end fixed to the lower part of the hoistway 1 after being wound around the deflecting wheel 5. Thus, the driving rope 16 suspends the car 2 via the car suspension beam 13. The position of the suspension point P of the car 2 by the driving rope 16 is a position deviated from the area of the car 2 in the vertical projection plane of the hoistway 1 as shown in FIG. The car 2 is moved up and down in the hoistway 1 in conjunction with the vertical movement of the deflector 5. The hydraulic elevator drive unit 3 includes a hydraulic jack 4, a hydraulic power unit, hydraulic piping, a hydraulic control panel, a deflector 5, a deflector guide rail 6, and a drive rope 16.

  The car 2 includes a car room 17 and a car frame 18 including a pair of vertical columns 18 a arranged on both sides in the width direction of the car room 17. The car room 17 is supported by a car floor frame placed on the vibration isolator 15. The vertical column 18 a is disposed to face the car guide rail 8.

  The car 2 is provided with a pair of car doors 19 for opening and closing the car doorway of the car room 17. The landing is provided with a pair of landing doors 20 that open and close the landing entrance. When the car 2 reaches the landing floor, the car door 19 is engaged with the landing door 20 by an engaging device (not shown). The car door 19 is opened and closed by a driving force of a door driving device (not shown). The landing door 20 opens and closes in conjunction with the car door 19. At the lower part of the hoistway 1, as shown in FIG. 1, a car shock absorber 21 is installed to reduce the impact caused by the collision of the car 2 with the bottom of the hoistway 1.

  Next, an elevator repair method will be described. 4 is a configuration diagram showing a machine room-less elevator obtained by refurbishing the hydraulic elevator shown in FIG. 1, and FIG. 4 (a) is a diagram showing a state in which the car 2 is landed on the top floor. (B) is a figure which shows the state which the car 2 has landed on the lowest floor. FIG. 5 is a plan view showing the machine room-less elevator of FIG. Further, FIG. 6 is a plan view showing some devices of the machine room-less elevator of FIG.

  When the hydraulic elevator shown in FIG. 1 is repaired to the machine room-less elevator shown in FIG. 4, first, the hydraulic elevator drive unit 3 is removed from the hoistway 1. Thereby, as shown in FIG.5 and FIG.6, between the raising / lowering path | route of the existing cage | basket | car 2, and the wall of the hoistway 1, the apparatus installation space 31 containing the space from which the drive part 3 for hydraulic elevators was removed was shown. Is provided. When the hydraulic elevator drive unit 3 is removed, the car 2 is held by applying braking force to the car 2 with the existing emergency stop device 9 so that the car 2 does not fall (driving unit removing step).

  Thereafter, the car suspension beam 13 is removed from the emergency stop frame 12 by removing the bolts (car suspension beam removal step).

  Thereafter, the equipment in the hoistway including the hoisting machine 32 is newly installed at a predetermined position in the equipment installation space 31. The hoisting machine 32 is a thin hoisting machine having a radial dimension larger than an axial dimension (a hoisting machine installation step).

  After the car suspension beam 13 is removed from the emergency stop frame 12 (after the car suspension beam removal step), a car suspension device 34 including a pair of car suspension vehicles 33 that are disposed apart from each other in the horizontal direction is placed below the car 2. Provide. At this time, the car suspension device 34 is attached to the emergency stop frame 12 by bolts using the attachment holes 14 (FIG. 6) of the car suspension beam 13 (car suspension device installation step).

  Thereafter, the main rope 35 is wound around each car suspension wheel 33 so as to pass under the car 2, the main rope 35 is wound around the sheave 32 a of the hoisting machine 32, and the car 2 is suspended by the main rope 35. (Main rope winding process). As the main rope 35, a rope, a belt, etc. are used, for example. In this way, the hydraulic elevator is repaired to a machine room-less elevator.

  That is, the existing ones are used for the hoistway 1, the car 2, the car guide rail 8, the emergency stop device 9, the car door 19, the landing door 20, and the car shock absorber 21.

  Hereinafter, the configuration of the machine room-less elevator after the repair will be described. The hoisting machine 32 is installed in the lower part of the hoistway 1 through the hoisting machine fixing base 36 as shown in FIG. The height of the installation position of the hoisting machine 32 is set according to the height of the position of the floor surface of the lowest floor.

  In the hoistway 1, a counterweight 37 is provided so as to be able to go up and down while avoiding the hoisting path of the car 2. As shown in FIGS. 5 and 6, a pair of counterweight guide rails 38 for guiding the counterweight 37 are installed on both sides of the counterweight 37. On the upper part of the counterweight 37, a counterweight suspension wheel 39 is provided.

  As shown in FIG. 6, each car suspension wheel 33 provided at the lower part of the car 2 is arranged at a position outside the area of the emergency stop device 9 in the vertical projection plane of the hoistway 1. A part of each car suspension wheel 33 protrudes from the area of the car 2 to both sides in the width direction in the vertical projection plane of the hoistway 1. As shown in FIG. 6, the car suspension wheels 33 are arranged on a straight line B parallel to the straight line A connecting the car guide rails 8 and passing through the area of the car 2 in the vertical projection plane of the hoistway 1. They are placed apart.

  As shown in FIG. 4, horizontally disposed support beams 40 are installed on the hoistway 1. The support beam 40 is provided with a car-side return wheel 41, a counterweight-side return wheel 42, a car-side rope stop 43, and a counterweight-side rope stop 44.

  The car 2 and the counterweight 37 are suspended in the hoistway 1 by a plurality of main ropes (for example, ropes, belts, etc.) 35. The main rope 35 extends from one end 35a connected to the car side rope stop 43 to each car suspension wheel 33, the car side return wheel 41, the sheave 32a of the hoisting machine 32, the counterweight side return wheel 42, and the fishing. It is wound in the order of the counterweight suspension wheel 39 and reaches the other end portion 35 b connected to the counterweight rope stop portion 44.

  Specifically, the main rope 35 is directed downward from the car side rope stopper 43 and is then wound around one of the car suspension wheels 33 to change the direction in the horizontal direction and is further wound around the other car suspension wheel 33. It is hung and turns upward. The main rope 35 directed upward from the other car suspension wheel 33 is wound around the car-side return wheel 41 and reversed, and after being directed downward, is wound around the sheave 32a of the hoisting machine 32 and reversed. Head up. After that, the main rope 35 going upward from the sheave 32a of the hoisting machine 32 is wound around the counterweight side return wheel 42 and reversed, and after going downward again, is wound around the counterweight suspension wheel 39. It is hung and reversed, and it goes upward again, and reaches the counterweight side rope stopper 44. The main rope 35 is wound around the car suspension wheel 33, the car side return wheel 41, the sheave 32a of the hoisting machine 32, the counterweight side return wheel 42, and the counterweight suspension wheel 39 in the main rope winding step. Done.

  Below the counterweight 37, as shown in FIG. 4, a counterweight buffer 45 is arranged to reduce the impact of the collision of the counterweight 37 against the bottom of the hoistway 1. The counterweight buffer 45 is installed in the lower part of the hoistway 1.

  A control panel (not shown) for controlling the operation of the elevator is installed in the hoistway 1. The hoisting machine 32 generates a driving force for moving the car 2 and the counterweight 37 up and down. The car 2 and the counterweight 37 are moved up and down in the hoistway 1 when the hoisting machine 32 is driven by the control of the control panel and the sheave 32a of the hoisting machine 32 is rotated.

  Hoisting machine 32, hoisting machine fixing base 36, counterweight 37, counterweight guide rail 38, counterweight suspension car 39, support beam 40, car side return wheel 41, counterweight side return wheel 42 The car-side rope stopper 43, the counterweight-side rope stopper 44, the counterweight buffer 45, and the control panel are newly installed at predetermined positions in the appliance installation space 31 as equipment in the hoistway. In this example, as shown in FIG. 5, the hoisting machine fixing base 36, the counterweight 37, the counterweight guide rail 38, the counterweight suspension car 39, the counterweight side return wheel 42, and the counterweight. A side rope stop 44 is disposed in the equipment installation space 31 between the rear wall 1a of the hoistway 1 and the car 2, and the car side return wheel 41 is located between one side wall 1b of the hoistway 1 and the car 2. The car side rope stopper 43 is arranged in the equipment installation space 31 between the other side wall 1 c of the hoistway 1 and the car 2. Further, the support beam 40 is disposed in the equipment installation space 31 between the rear wall 1a and the side walls 1b and 1c of the hoistway 1 and the car 2.

  Here, FIG. 7 is a plan view comparing the position of the suspension point for suspending the cage 2 of the hydraulic elevator of FIG. 2 and the position of the suspension point for suspending the cage 2 of the rope-type machine room-less elevator of FIG. 7A is a diagram showing the position of the suspension point of the car 2 of the hydraulic elevator, and FIG. 7B is a diagram showing the position of the suspension point of the car 2 of the machine room-less elevator. As shown in FIG. 7, the position of the suspension point P of the car 2 of the hydraulic elevator before refurbishment is outside the area of the car 2 in the vertical projection plane of the hoistway 1 as shown in FIG. Is in position. On the other hand, since the main rope 35 is passed under the car 2 at the position of the suspension point Q of the car 2 of the machine room-less elevator after the renovation, as shown in FIG. In the vertical projection plane, the position is within the area of the car 2. That is, the position of the suspension point Q of the rope-type machine room-less elevator car 2 after the refurbishment is longer than the position of the suspension point P of the hydraulic elevator car 2 before the refurbishment in the vertical projection plane of the hoistway 1. Only L is close to the center of gravity G of the car 2.

  Next, the car suspension device 34 newly provided at the lower part of the car 2 when the elevator is repaired will be specifically described. FIG. 8 is a side view showing the car 2, the safety device 9 and the car suspension device 34 of FIG. FIG. 9 is a plan view showing the car 2, the safety device 9 and the car suspension device 34 of FIG. Further, FIG. 10 is a cross-sectional view taken along line XX of FIG. In the figure, the car suspension device 34 includes each car suspension vehicle 33, a bracket device 46 attached to the emergency stop frame 12, a car suspension vehicle frame 47 attached to the bracket device 46 and supporting each car suspension vehicle 33. have.

  The bracket device 46 is rotatable about a mounting base 48 attached to an intermediate portion of the emergency stop frame 12 and a pin (horizontal axis) 49 provided horizontally on the mounting base 48, and a car suspension car frame 47 is attached to the bracket device 46. Bracket 50 is provided.

  As shown in FIG. 10, the mounting base 48 is fixed to the intermediate portion of the safety frame 12 from below by bolts 51 inserted into the mounting holes 14. Further, the mounting base 48 is disposed at a position overlapping the car shock absorber 21 in the vertical projection plane of the hoistway 1. Therefore, when the car 2 is further lowered from the lowest floor, the mounting base 48 collides with the car shock absorber 21. Therefore, the mounting base 48 serves as both a mounting portion for mounting the car suspension device 34 to the emergency stop frame 12 and a receiving base that receives the collision of the car shock absorber 21.

  The pin 49 is disposed along the longitudinal direction of the safety frame 12. As shown in FIG. 9, the bracket 50 is arranged along the direction perpendicular to the longitudinal direction of the safety frame 12 in the vertical projection plane of the hoistway 1. One end of a bracket 50 is attached to the pin 49. As shown in FIG. 10, the car suspension vehicle frame 47 is fixed to the upper surface of the other end of the bracket 50 by bolts 52.

  The car suspension vehicle frame 47 is disposed along the longitudinal direction of the safety frame 12. As shown in FIG. 9, the car suspension frame 47 is arranged on a straight line B that is parallel to the straight line A connecting the car guide rails 8 and passes through the area of the car 2 in the vertical projection plane of the hoistway 1. ing. In addition, the car suspension vehicle frame 47 mostly overlaps the area of the car 2 except for both ends in the vertical projection plane of the hoistway 1.

  The portion fixed to the bracket 50 of the car suspension vehicle frame 47 is an intermediate portion of the car suspension vehicle frame 47. One car suspension wheel 33 is supported by one end portion of the car suspension wheel frame 47, and the other car suspension wheel 33 is supported by the other end portion of the car suspension wheel frame 47. Each car suspension car 33 is covered from above by a car suspension car frame 47. Each car suspension car 33 and car suspension car frame 47 are displaced in the vertical direction according to the rotation of the bracket 50 around the pin 49.

  Here, as shown in FIG. 11, when each car suspension wheel 33 is arranged on a straight line C intersecting a straight line A connecting the car guide rails 8 in the vertical projection plane of the hoistway 1, The suspended vehicle frame 47 is disposed at a position overlapping the lower part of the safety device 9. Therefore, the downward protrusion amount of the car suspension device 34 with respect to the car 2 is increased.

  In contrast, in the present embodiment, as shown in FIG. 12, each car suspension wheel 33 is placed on a straight line B parallel to a straight line A connecting the car guide rails 8 in the vertical projection plane of the hoistway 1. Thus, the safety device 9 and the car suspension device 34 can be arranged side by side in the horizontal direction. Thereby, the downward protrusion amount of the car suspension device 34 relative to the car 2 is reduced, and the height of the entire lifting body including the car 2 can be reduced.

  FIG. 13 is a cross-sectional view showing the car suspension device 34 when the bracket 50 of FIG. 10 rotates about the pin 49. FIG. 14 is a front view showing the car suspension device 34 of FIG. The car suspension frame 47 has a holding position in contact with the lower surface of the car floor frame (the lower part of the car 2) of the car 2 and a disengagement position located below the holding position by the rotation of the bracket 50 with respect to the mounting base 48. Displaced between.

  In a state where the main rope 35 is wound around each car suspension car 33 and the car 2 is suspended by the main rope 35, the car suspension car frame 47 receives upward force due to the load of the car 2, and the car 2 It is displaced to the holding position where it touches the floor frame. Thereby, the car 2 is stably suspended by the main rope 35 in a state where the load of the car 2 is received from the car suspension vehicle frame 47 by the car floor frame.

  Between the vertical column 18a of the car 2 and the car suspension vehicle frame 47, as shown in FIGS. 9 and 10, a pair of connection fittings (connection members) 53 having an L-shaped cross section are connected. One connection fitting 53 is connected between one end of the car suspension vehicle frame 47 and one vertical column 18a, and the other connection fitting 53 is connected between the other end of the car suspension vehicle frame 47 and the other vertical column 18a. (FIG. 9). The car suspension vehicle frame 47 is held at the holding position by the connection between the vertical column 18 a and the car suspension vehicle frame 47 by the connection fitting 53. This prevents the car suspension device 34 from shifting in the horizontal direction (the width direction of the car 2) with respect to the car 2.

  The connection fitting 53 is fixed to the vertical column 18 a with a bolt 54, and is fixed to the car suspension frame 47 with a bolt 55. Thereby, the connection metal fitting 53 can be attached to and detached from each of the vertical column 18 a of the car 2 and the car suspension frame 47. The connecting metal 53 is attached between the vertical column 18a and the car suspension vehicle frame 47 in the car suspension device installation process.

  In such an elevator renovation method, the hydraulic elevator drive unit 3 is removed, and an equipment installation space 31 is provided between the hoistway of the existing car 2 and the wall of the hoistway 1, and the car 2 is moved from the car 2. The hoisting beam 13 is removed, the hoisting machine 32 is installed in the equipment installation space 31, and the car suspension device 34 is provided at the lower part of the car 2. Therefore, the existing car 2 and the like can be used for the repaired elevator. . Moreover, since the apparatus installation space 31 is ensured in the existing hoistway 1, it is not necessary to ensure an additional apparatus installation space. Therefore, it is possible to shorten the period of elevator repair work, reduce waste, and reduce costs. Further, by winding the main rope 35 around each car suspension wheel 33 of the car suspension apparatus 34, the main rope 35 can be passed below the car 2, and the position of the suspension point of the car 2 by the main rope 35 can be determined. 2 can be brought close to the center of gravity. Thereby, the car 2 can be stably suspended by the main rope 35, and the load from the car 2 acting on the equipment such as the car guide rail 8 can be reduced. Thereby, the lifetime of the elevator after repair can be achieved.

  Further, since the car suspension device 34 is attached to the emergency stop frame 12, the car suspension device 34 can be provided in the lower portion of the car 2 without processing the car 2. Thereby, the effort of the repair work of an elevator can further be reduced, and the period of the repair work of an elevator can be further shortened.

  Further, since each car suspension car 33 is arranged on a straight line B parallel to a straight line A connecting the car guide rails 8 in the vertical projection plane of the hoistway 1, the car suspension car device 34 is an emergency stop device. 9 can be arranged side by side in the horizontal direction, and the amount of protrusion of the car suspension device 34 below the car 2 can be reduced. Thereby, reduction of the height dimension of the whole raising / lowering body containing the cage | basket | car 2 can be achieved.

  Further, since the car suspension device 34 is attached to the emergency stop frame 12 using the mounting holes 14 of the car suspension beam 13 provided in the emergency stop frame 12, the existing car 2 and the emergency stop frame 12 are processed. Without this, the car suspension device 34 can be provided in the lower part of the car 2. Thereby, the effort of the repair work of an elevator can further be reduced, and the period of the repair work of an elevator can be further shortened.

  In the car suspension device 34, a car suspension vehicle frame 47 is attached to a bracket 50 that is rotatable with respect to a mounting base 48 attached to the emergency stop frame 12, and the car suspension vehicle frame 47 is attached to the bracket 50 attachment base. Since it is displaced between the holding position contacting the lower part of the car 2 and the disengagement position located below the holding position by the rotation with respect to the car 48, it is wound around each car suspension wheel 33. When the car 2 is suspended by the main rope 35, the car suspension frame 47 can be brought into contact with the lower part of the car 2 from below, and the load when the car 2 is suspended by the main rope 35 is applied to the lower part of the car 2. Can be received at. Thereby, the load when the car 2 is suspended can be borne not only on the emergency stop frame 12 but also on the lower part of the car 2. Therefore, it is possible to prevent a large load from acting on the emergency stop frame 12, and it is possible to prevent the emergency stop frame 12 from being damaged. Thereby, the lifetime improvement of the elevator after repair can further be aimed at.

  Further, since the connecting bracket 53 is connected between the vertical column 18a of the car 2 and the car suspension car frame 47, the car suspension car frame 47 is held at the holding position, so that the car hanging car frame 47 is held at the holding position. Can be prevented, and the suspended state of the car 2 by the main rope 35 can be further stabilized.

  In addition, since the mounting base 48 is disposed at a position overlapping the car shock absorber 21 in the vertical projection plane of the hoistway 1, the mounting base 48 can be used as a receiving base for the car shock absorber 21. The number of parts of the installed equipment can be reduced.

  In the above example, the car suspension frame 47 is held at the holding position by connecting the vertical column 18a of the car 2 and the car suspension frame 47 with the connection bracket 53. 53 may be omitted. Even in this case, the load when the car 2 is suspended by the main rope 35 can be received at the lower part of the car 2, and it is possible to prevent a large load from acting on the emergency stop frame 12.

  In the above example, the car suspension vehicle frame 47 is directly attached to the bracket 50. However, an adjustment plate (liner) is inserted between the car suspension vehicle frame 47 and the bracket 50, so that the car suspension vehicle frame 47 and the bracket are mounted. You may make it adjust the gap dimension between 50.

  That is, in a state where the adjustment plate is not inserted between the car suspension car frame 47 and the bracket 50, the car hanger is suspended if the size of the car suspension car frame 47 is larger or smaller than the size of the car suspension car frame 47 shown in FIG. The car frame 47 is in contact with the lower surface of the car floor frame in a state of being inclined with respect to the horizontal plane. In this case, the rotation axis of the car suspension wheel 33 is also inclined with respect to the horizontal plane.

  Therefore, in the car suspension device installation process, the car suspension vehicle frame 47 is brought into contact with the lower surface of the car floor frame in a horizontal state, and the gap generated between the bracket 50 inclined to the horizontal plane and the car suspension vehicle frame 47 is formed. When the car suspension car frame 47 is in contact with the lower surface of the car floor frame by inserting the adjustment plate and fixing the car suspension car frame 47 to the bracket 50 with the bolts 52 (when the car suspension car frame 47 is in the holding position). The rotating shaft of the car suspension wheel 33 can be adjusted horizontally. Since the rotation axis of the car suspension wheel 33 when the car suspension wheel frame 47 is in the holding position is adjusted horizontally, the main rope 35 can be more reliably wound around the car suspension wheel 33.

  In the above example, the bracket 50 is rotatable with respect to the mounting base 48. However, the bracket 50 may be fixed to the mounting base 48 by, for example, bolts or welding. Further, the bracket 50 may be directly fixed to the emergency stop frame 12 by, for example, a bolt or welding without using the mounting base 48. When the bracket 50 is directly fixed to the emergency stop frame 12, the bracket 50 also serves as a cradle for the car shock absorber 21.

  In the above example, the machine room-less elevator is an elevator obtained by renovating a hydraulic elevator, but the machine room-less elevator may be a newly installed elevator.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 2 Cars, 3 Hydraulic elevator drive parts, 4 Hydraulic jack, 5 Baffle, 8 Car guide rail, 9 Emergency stop device, 12 Emergency stop frame (frame of emergency stop device), 13 Car suspension beam, 14 mounting holes, 16 drive ropes, 21 car shock absorbers, 31 equipment installation space, 32 hoisting machines, 32a sheaves, 33 car suspension cars, 34 car suspension equipments, 35 main ropes, 46 bracket equipments, 47 cars Suspended car frame, 48 mounting base, 49 pins (horizontal axis), 50 bracket, 53 connecting bracket (connecting member).

Claims (9)

A hydraulic elevator including a hydraulic jack, a sled car that is moved up and down by the hydraulic jack, and a driving rope that is wound around the sled car and that suspends the car through a car suspension beam attached to the car A method of repairing an elevator, wherein a hydraulic elevator in which the car is raised and lowered by a drive unit is an elevator in which the car is raised and lowered by a driving force of a hoisting machine,
The drive part removal process which removes the said hydraulic elevator drive part, and provides an apparatus installation space between the raising / lowering path of the said existing car, and the wall of a hoistway,
A car suspension beam removal process for removing the car suspension beam from the car,
A hoist installation process for installing the hoist in the equipment installation space;
After the car suspension beam removal step, the car suspension device installation process including a pair of car suspension devices including a pair of car suspension vehicles arranged apart from each other in the horizontal direction, and passing under the car. A main rope wrapping step in which the main rope is wound around each car suspension wheel, the main rope is wound around the sheave of the hoisting machine, and the car is suspended by the main rope .
At the bottom of the car, an existing emergency stop device is provided that applies braking force to the car by gripping a pair of car guide rails arranged on both sides of the car.
The elevator car repair method, wherein the car suspension device is attached to a frame of the safety device . 2. The elevator repair method according to claim 1 , wherein each of the car suspension vehicles is arranged on a straight line parallel to a straight line connecting the car guide rails in a vertical projection plane of the hoistway. . The car suspending pulley device, the safety device utilizing the mounting hole of the car suspension beams provided on the frame of the characterized in that it is attached to the frame of the safety device according to claim 1 or claim 2 The elevator repair method described in 1. The car suspension device further includes a bracket device and a car suspension frame attached to the bracket device and supporting each of the car suspension vehicles,
The bracket device has a mounting base that is attached to a frame of the safety device, and a bracket that is rotatable with respect to the mounting base and to which the car suspension frame is attached.
The car suspension vehicle frame is displaced between a holding position in contact with a lower portion of the car and a disengagement position located below the holding position by the rotation of the bracket with respect to the mounting base. elevator methods renovation according to any one of claims 1 to 3. The elevator car according to claim 4 , wherein, in the car suspension device installation step, the car suspension vehicle frame is held at the holding position by connecting a connecting member between the car and the car suspension vehicle frame. Renovation method. The car suspension device further includes a bracket device attached to a frame of the safety device, and a car suspension frame attached to the bracket device and supporting each of the car suspension vehicles,
The bracket unit, in a vertical projection plane of the hoistway, the elevator method refurbishment according to any one of claims 1 to 5, characterized in that is disposed at a position overlapping the car buffer. In the car suspension device installation step, an adjustment plate is inserted between the car suspension vehicle frame and the bracket, so that the rotation axis of the car suspension vehicle is horizontal when the car suspension vehicle frame is in the holding position. The method for repairing an elevator according to claim 4 or 5 , wherein adjustment is performed. Basket,
An emergency stop device provided at a lower portion of the car, for applying a braking force to the car by gripping a pair of car guide rails for guiding the car;
A pair of car suspension vehicles that are spaced apart from each other in the horizontal direction, a car suspension vehicle frame that supports each of the car suspension vehicles, a bracket device to which the car suspension vehicle frame is attached and attached to the frame of the emergency stop device; A car suspension device provided at the bottom of the car,
A hoisting machine that generates a driving force for raising and lowering the car, and a main rope that hangs around the sheave of the hoisting machine and each of the car suspension cars and suspends the car,
The bracket device has a mounting base attached to the frame of the safety device, and a bracket that is rotatable with respect to the mounting base and to which the car suspension frame is attached.
The car suspension vehicle frame is displaced between a holding position contacting the lower part of the car and a disengagement position located below the holding position by the rotation of the bracket with respect to the mounting base. An elevator characterized by being. Claim the car suspending pulley frame, the car and the connection member detachable from the car suspension sheave frame by being connected between the car and the car suspension vehicle frame, characterized in that it is held in the holding position 8. The elevator according to 8 .

Images